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73 Cards in this Set

  • Front
  • Back
T or F. You may use a scouring agent on assistina
false
After starting the assistina, a green ball will appear in what window first indicating what?
a. Right hand window which is an indicator for maintenance solution
b. right hand window which is an indicator for service oil.
c. Left hand window which is an indicator for maintenance solution
d. Left hand window which is an indicator for service oil.
a. Right hand window which is an indicator for maintenance solution
The green ball appears in which window second?
a. Right hand window which is an indicator for maintenance solution
b. right hand window which is an indicator for service oil.
c. Left hand window which is an indicator for maintenance solution
d. Left hand window which is an indicator for service oil.
d. Left hand window which is an indicator for service oil.
Which cycle must be completed on the assistina before you can open the cover?
Maintenance cycle.
What is the name of the adapter which goes into the assistina?
Turbine Adapter
How long do you press the program button on the assistina?
Two seconds
T or F. 5k rpm Titan Slow Speed Handpiece can be lubed in the assistina
False, 5 k rpm Titam Slow Spead Handiece is never lubed or placed in the assistina.
T or F 20K rpm Titan Slow speed handpiece is lubed but not in the assistina.
False, it is not lubed at all.
T or F. 5K rpm Titan Slow Speed Handpiece requires a swivel adapter
False, the 20K does Titan Slow Speed Handpiece requires a swivel.
T or F. the Motor to Angle Adapter to the 20K rpm Titan Slow Speed Handpiece should be lubed after sterilization but never in the assistina.
True
ADEC/W&H Trend Slow Speed Handpiece is lubed in the Assistina ONLY
True
Which of the following handpieces are lubed using the assistina?
a. 5K rpm Titan Slow Speed Handpiece
b. 20K rpm Titan Slow Speed Handpiece
c. ADEC/W&H: TReND Slow Speed Handpiece
d. Star Dental:430 rpm High Speed Handpiece (non FO)
e. Midwest: Quiet Air High Speed Handpiece (non FO)
f. 430 SWL Fiber Optic High Speed
c. ADEC/W&H: TReND Slow Speed Handpiece
e. Midwest: Quiet Air High Speed Handpiece (non FO)
Do you have to lubricate the star latch angle head before sterilizing?
Yes, unscrew the knurled ring, remove knuckle and transmission gear from angle head, place drop of oil in two transmission gear joints between the hole in center of housing, rotate gears to allow lube to work. Apply light coart of lube to gear teeth. Reassemble
Should you lubricate the latch angle cartridge?
No, lubricated for life and sealed to keep the dirt out.
Which of the following handpieces are lubed ONLY using the assistina?
a. Midwest:Stylus Fiber Optic High Speed
b. 20K rpm Titan Slow Speed Handpiece
c. ADEC/W&H: TReND Slow Speed Handpiece
d. Star Dental:430 rpm High Speed Handpiece (non FO)
e. Midwest: Quiet Air High Speed Handpiece (non FO)
f. 430 SWL Fiber Optic High Speed
c. ADEC/W&H: TReND Slow Speed Handpiece
Which of the following are not sterilized?
a. Swivel
b. Coupler to 20K rpm Titan Slow Speed Handpiece
c. Coupler to ADEC/W&H: TReND SLow Speed Handpeice
d. Fiber Optic Swivel
e. all of the above
E. all of the above, couplers for all the handpieces are not sterilized.
If the Star 430 K High Speed handpiece has a black ring it must cover the hole in the handpiece housing to achieve optimum cooling when using
FALSE, If the Star 430 K High Speed handpiece has a black ring it must cover the hole in the handpiece housing to achieve optimum air pressure when using
Star 430 K High Speed handpiece may be used on fiber optic tubing and does not require a swivel adapter.
First false "Non Fiber optic" second true.
Do not run Star 430k High Speed Handpiece under cold water to cool more quickly because it could cause the internal parts to rust
FALSE, Do not run Star 430K handpiece under cold water to cool more quickly because it could cause the internal parts to crack
How do you lube the 5 hole coupler of the Midwest:Stylus Fiber Optic High Speed
Only the O-rings lightly.
Midwest: Quiet Air High Speed Handpiece (non FO) requires lubing but it can be done either manually or with an assistina.
. Both True, BUT not both at the same time.
How often would you lube the Midwest:Stylus Fiber Optic High Speed Handpiece?
weekly, and only on the chuck
How do you put a bur into the Midwest:Quiet air High Speed Handpiece (non FO)?
Using a Midwest bur removal tool,
ADEC/W&H: TReND Slow Speed Handpiece is the only handpiece that can be placed in the dishwasher.
FALSE, none of the handpieces that we have can be placed in the dishwasher OR ultrasonic.
What are the special directions for lubing 430SWL Fiber Optic High Speed?
If it has a red band on it, lube is needed.
Which of the following require lube but cannot be placed in the assistina?
a. Star Dental: Latch type Contra-Angle head
b. Star Dental: 430K rpm High Speed Handpiece (non FO)
c. Midwest: Quiet Air High Speed Handpiece (non FO)
d. Star Dental: 20K rpm Titan Slow Speed Handpiece Motor to Angle Adapter
e. 430 SWL Fiber Optic High Speed
a. Star Dental: Latch type Contra-Angle head
d. Star Dental: 20K rpm Titan Slow Speed Handpiece Motor to Angle Adapter

the Star Dental 430K rpm High Speed Handpiece non FO is not lubed

Midwest:Quiet Air High Speed Handpiece can be used in assistina

Star 430 SWL Fiber Optic High Speed is only lubed if it has a red band on it
ADEC/W&H: TReND slow speed handpiece can be tri-cided.
True
T of F. All of the angle heads for the different handpieces need lube but cannot be placed in the assistina
False, all except for ADEC which goes in together
Plastic wrench used for the ADEC is not sterilized but is tricided.
true
430 SWL Fiber Optic High Speed has a fiber optic swivel
true
Midwest:Stylus Fiber Optic High Speed has a button, not a key for removing burs.
true
How do you lubricate the Midwest: Stylus Fiber Optic High Speed Handpiece?
Once a week, only on the chuck NOT inside handpiece or on assistina. Run for 20 seconds without a bur until it reaches normal speed or excess is expelled. Wipe off excess.
Which handpiece is only lubricated once a week on the chuck only?
a. Star Dental: 20K rpm Titan Slow Speed Handpiece
b. ADEC/W&H: TReND Slow Speed Handpiece
c. Star: 430K rpm High Speed Handpiece (non FO)
d. Midwest: Quiest Air High Speed Handpiece (non FO)
e. Star Dental: 430 SWL Fiber Optic High Speed Handpiece
f. Midwest:Stylus Fiber Optic High Speed Handpiece
F. Midwest:Stylus Fiber Optic High Speed Handpiece
The Midwest: Quiet Air coupler is the only one that is lubed once a week on the O-rings.
False, Midwest: Stylus
Which handpieces do not need a swivel or coupler attachment?
a. Star Dental: 20K rpm Titan Slow Speed Handpiece
b. ADEC/W&H: TReND Slow Speed Handpiece
c. Star: 430K rpm High Speed Handpiece (non FO)
d. Midwest: Quiest Air High Speed Handpiece (non FO)
e. Star Dental: 430 SWL Fiber Optic High Speed Handpiece
f. Midwest:Stylus Fiber Optic High Speed Handpiece
g. 5K rpm Titan Slow Speed Handpiece
c. Star: 430K rpm High Speed Handpiece (non FO) – one we have now
d. Midwest: Quiest Air High Speed Handpiece (non FO) – one we have now
g. 5K rpm Titan Slow Speed Handpiece – One we had in small clinic
To clean out the auto chuck mechanism in a Star: 430SWL Fiber Optic High Speed, remove bur from chuck and use AIR ONLY in the hole.
true
There is a specific formula for different types or percentage of metal elements present in an alloy. The percent and types will fall in a range depending on properties manufacture wishes to achieve.
a. Both are true
b. Both are false
c. First is true, second is false
d. First is false, second is true
d. first is false, second is true (there is NOT a specific formula)
Which element in amalgam is responsible for rapid hardening, high expansion, and when in high percentages is easily tarnishable?
a. Silver
b. Zinc
c. Tin
d. Copper
a. Silver (also high strength, high luster, slow to amalgamate and excessive expansion)
Tin is the most second most prevalent metal in amalgam alloy. It is non-tarnishing when amalgamated with mercury.
a. Both are true
b. Both are false
c. First is true, second false
d. First is false, second true
c. First is true, second false
("Tin is RELATIVELY non-tarnishing when amalgamated with mercury")
Which element specifically counter balances the negative aspects of silver (and silver counter-balances the negative aspects of it..)?
a. Copper
b. Zinc
c. Tin
c. Tin
(“The non-tarnishing property of (tin) counter-balances the tendency of silver to give black oxide and sulfides, just as the slow setting and shrinkage of tin amalgam offsets the fast setting and high expansion of silver”)
Excess Silver Causes
a. Rapid hardening
b. Slow setting
c. Weaker Amalgam
d. High Strength
e. High expansion
f. Excessive Shrinkage
g. Slow to Amalgamate
a. Rapid hardening
d. High Strength
e. High expansion
g. Slow to Amalgamate
Which element is termed a modifier to the other metals in the alloy?
a. Silver
b. Tin
c. Copper
d. Zinc
c. copper
The working properties are the same in high copper verses low copper alloy
a. True
b. False
False
Copper and silver share similar expansion and strength properties. This makes it possible to interchange silver with copper in any percentage.
a. Both are true
b. Both are false
c. First is true, second is false
d. First is false, second is true
c. First is true, second is false

(“will have about the same expansion and strength” “keep the percentage of copper within low limits to prevent ‘sweating’ of the amalgam after it is set.)
Which element is known as the control metal or scavenger?
a. Silver
b. Copper
c. Tin
d. Zinc
d. Zinc
What determines the dimensional change of amalgam DURING hardening?
Silver
What are the elements in gamma one?
a. Silver- Tin
b. Copper-Tin
c. Silver-mercury
d. Tin-mercury
e. Copper-Mercury
c. Silver- Mercury
What are the elements of gamma 2?

a. Silver-Tin
b. Copper-tin
c. Silver-Mercury
d. Tin-Mercury
e. Copper-Mercury
d. Tin-Mercury
ETA?
a. Silver-Tin
b. Copper-tin
c. Silver-Mercury
d. Tin-Mercury
e. Copper-Mercury
b. Copper-Tin
Which is not a determined gamma phase or ETA phase?
a. Silver Tin
b. Copper-Tin
c. Silver Mercury
d. Tin-Mercury
e. Copper-Mercury
e. Copper-Mercury *

Silver Tin (gamma phase or CORE) Copper-Tin (ETA phase)
Silver Mercury (gamma 1)
Tin-Mercury (gamma 2)
Silver-Mercury makes up the gamma 1 phase and is considered the most corrosive and weakest phase.
first true, second phase (Tin-Mercury gamma 2 is the most corrosive and weakest phase)
What has a higher affinity for copper than mercury?
Tin
T or F Tin has the opposite properties of silver.
True
T or F Tin combines with mercury to from gamma 1
False, tin-mercury is gamma 2
T or F Tin has a higher affinity for mercury than copper.
False, Tin has a higher affinity for COPPER than mercury
T or F Zinc compounds are white and the amalgam is not discolored.
True
T or F All non-zinc alloys show some blackening due to oxidation during amalgamation.
true
T or F If there is any moisture present in the cavity the tin will react slowly with water, forming tin oxide and hydrogen gas .
False, Zinc and it will cause expansion of the amalgam after it has hardened just from the extensive pressure from the gas formation.
Delayed Expansion is…
a. When zinc combines with water, oxidizes and releases gas that causes expansion after the amalgam has hardened.
b. The expansion that occurs after the initial contraction when the amalgam is setting up.
a. When zinc combines with water, oxidizes and releases gas that causes expansion after the amalgam has hardened.
Which is the most chemically active element in amalgam?
a. Silver
b. Tin
c. Copper
d. Zinc
d. Zinc (It’s the scavenger, any reaction takes place first by reacting with zinc)
T or F Zinc is in a free state in plastic amalgam
true
T or F Delayed expansion values caused by silver are as high as 200 microns per centimeter
(false, zinc, but it is 200 microns is correct)
T or F You may use an alloy with high percentages of zinc without a rubber dam as long as good suctioning/drying techniques are applied.
False, “alloys containing high percentages of zinc should not be placed without a rubber dam to insure a dry cavity”)
T or F Early strength of amalgam is low--- caution patient not to bite hard for at least 6 hours
(First is true, second false, 8 hours)
T or F The strength of the amalgam is related to bond strength between the core and matrix.
true
T or F The greater number of alloy filings present with the least amount of matrix, the more brittle the structure.
(False, “the stronger the structure”).
Gamma 2 is the weakest and most corrosive phase. High copper absolutely eliminates this phase.
(First is true, second false. “High copper has little or no gamma 2”)
Which are true about the factors that affect creep?
a. More gamma 2 increases creep
b. Excess mercury decreases creep
c. More gamma 2 decreases creep
d. Excess Mercury increases creep
e. Triturating incorrectly increases creep
a. More gamma 2 increases creep
d. Excess Mercury increases creep
e. Triturating incorrectly increases creep
Which of the following is NOT a factor that effects marginal breakdown?
a. Moisture contamination of zinc.
b. excess mercury
c. corrosion
d. creep
e. improper cavity prep
f. improper finishing
g. none of the above
g. none of the above, they ALL do.
What is NOT a purpose of condensation?
a. force particles close together
b decrease expansion.
c. adapt amalgam to cavity
d. develops uniforms mass with no voids and with no voids and will polish well.
e. remove mercury.
b. decrease expansion. That is a "reason"
Decreasing expansion, creep, increasing strength and achieving maximal life of restoration are all reasons for proper condensing.
true
The force used during condensing is determined by the plasticity of amalgam, the alloy/Hg ratio and size of condenser. Less force is needed for wet or soupy mix and more is needed for dryer mix.
Both true
Polishing strips and discs can be used interproximally and on buccal and lingual surfaces
false, strips can only be used interproximally